# # Scrapy settings for jindon project
# #
# # For simplicity, this file contains only settings considered important or
# # commonly used. You can find more settings consulting the documentation:
# #
# #     https://docs.scrapy.org/en/latest/topics/settings.html
# #     https://docs.scrapy.org/en/latest/topics/downloader-middleware.html
# #     https://docs.scrapy.org/en/latest/topics/spider-middleware.html
#
# BOT_NAME = 'jindon'
#
# SPIDER_MODULES = ['jindon.spiders']
# NEWSPIDER_MODULE = 'jindon.spiders'
#
#
# # Crawl responsibly by identifying yourself (and your website) on the user-agent
# USER_AGENT = 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/101.0.4951.54 Safari/537.36'
#
# # Obey robots.txt rules
# ROBOTSTXT_OBEY = False
#
# # Configure maximum concurrent requests performed by Scrapy (default: 16)
# #CONCURRENT_REQUESTS = 32
#
# # Configure a delay for requests for the same website (default: 0)
# # See https://docs.scrapy.org/en/latest/topics/settings.html#download-delay
# # See also autothrottle settings and docs
# #DOWNLOAD_DELAY = 3
# # The download delay setting will honor only one of:
# #CONCURRENT_REQUESTS_PER_DOMAIN = 16
# #CONCURRENT_REQUESTS_PER_IP = 16
#
# # Disable cookies (enabled by default)
# #COOKIES_ENABLED = False
#
# # Disable Telnet Console (enabled by default)
# #TELNETCONSOLE_ENABLED = False
#
# # Override the default request headers:
# #DEFAULT_REQUEST_HEADERS = {
# #   'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',
# #   'Accept-Language': 'en',
# #}
#
# # Enable or disable spider middlewares
# # See https://docs.scrapy.org/en/latest/topics/spider-middleware.html
# #SPIDER_MIDDLEWARES = {
# #    'jindon.middlewares.JindonSpiderMiddleware': 543,
# #}
#
# # Enable or disable downloader middlewares
# # See https://docs.scrapy.org/en/latest/topics/downloader-middleware.html
DOWNLOADER_MIDDLEWARES = {
   'jindon.middlewares.UserAgentDownloaderMiddleware': 543,
}
#
# # Enable or disable extensions
# # See https://docs.scrapy.org/en/latest/topics/extensions.html
# #EXTENSIONS = {
# #    'scrapy.extensions.telnet.TelnetConsole': None,
# #}
#
# # Configure item pipelines
# # See https://docs.scrapy.org/en/latest/topics/item-pipeline.html
# ITEM_PIPELINES = {
#    'jindon.pipelines.JindonPipeline': 300,
# }
#
# # Enable and configure the AutoThrottle extension (disabled by default)
# # See https://docs.scrapy.org/en/latest/topics/autothrottle.html
# #AUTOTHROTTLE_ENABLED = True
# # The initial download delay
# #AUTOTHROTTLE_START_DELAY = 5
# # The maximum download delay to be set in case of high latencies
# #AUTOTHROTTLE_MAX_DELAY = 60
# # The average number of requests Scrapy should be sending in parallel to
# # each remote server
# #AUTOTHROTTLE_TARGET_CONCURRENCY = 1.0
# # Enable showing throttling stats for every response received:
# #AUTOTHROTTLE_DEBUG = False
#
# # Enable and configure HTTP caching (disabled by default)
# # See https://docs.scrapy.org/en/latest/topics/downloader-middleware.html#httpcache-middleware-settings
# #HTTPCACHE_ENABLED = True
# #HTTPCACHE_EXPIRATION_SECS = 0
# #HTTPCACHE_DIR = 'httpcache'
# #HTTPCACHE_IGNORE_HTTP_CODES = []
# #HTTPCACHE_STORAGE = 'scrapy.extensions.httpcache.FilesystemCacheStorage'



BOT_NAME = 'jindon'

SPIDER_MODULES = ['jindon.spiders']
NEWSPIDER_MODULE = 'jindon.spiders'


# Crawl responsibly by identifying yourself (and your website) on the user-agent
USER_AGENT = 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/101.0.4951.54 Safari/537.36'

# Obey robots.txt rules
ROBOTSTXT_OBEY = False

# 去重组件   指定redis去重组件   目的 不让scrapy节点爬取到相同的数据
DUPEFILTER_CLASS = "scrapy_redis.dupefilter.RFPDupeFilter"
# 任务队列  调度器  分配请求对象
SCHEDULER = "scrapy_redis.scheduler.Scheduler"

# 管道  权重值设置 重点 需要在保存到redis数据库之前保存到 本地  就需要将保存到本地的管道权重设置比保存到redis数据库权重小
ITEM_PIPELINES = {
   'scrapy_redis.pipelines.RedisPipeline': 300,
   'jindon.pipelines.JindonPipeline': 200,
}
# 是否进行断点续爬取
SCHEDULER_PERSIST = True

# 指定redis数据库
REDIS_URL = "redis://127.0.0.1:6379"
REDIS_HOST = "127.0.0.1"
REDIS_PORT = "6379"
DOWNLOAD_DELAY = 3